CN1214546C - Method for controlling transmission power for communication system - Google Patents

Method for controlling transmission power for communication system Download PDF

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Publication number
CN1214546C
CN1214546C CNB998102431A CN99810243A CN1214546C CN 1214546 C CN1214546 C CN 1214546C CN B998102431 A CNB998102431 A CN B998102431A CN 99810243 A CN99810243 A CN 99810243A CN 1214546 C CN1214546 C CN 1214546C
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China
Prior art keywords
mentioned
transmitting power
likelihood score
portable terminal
control signal
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Expired - Fee Related
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CNB998102431A
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Chinese (zh)
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CN1323470A (en
Inventor
恒原克彦
矢野隆
雅乐隆基
铃木俊郎
铃木利则
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Kddi Casio Hitachi Mobile Comm Co
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Hitachi Ltd
KDDI Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/08—Closed loop power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/10—Open loop power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/16—Deriving transmission power values from another channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/246—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters where the output power of a terminal is based on a path parameter calculated in said terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/248—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters where transmission power control commands are generated based on a path parameter

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention provides a transmit power controlling method for reducing an influence of incorrect control in a mobile communication system in the CDMA mode. A likelihood of transmit power controlling signal is generated on the basis of the transmit power controlling signal transmitted by a radio base station and the receiving quality, a variation amount of the transmit power is generated on the basis of the likelihood, and the transmit power of a mobile station is controlled on the basis of the variation amount.

Description

The transmit power controlling method of communication system
The present invention relates to the transmit power controlling method in the mobile communication system, more specifically, relate to the transmit power controlling method in the mobile communication system of suitable code division multiple access (CDMA) mode.
In the CDMA mode, shared identical frequency band of a plurality of portable terminals and base station communicate.So, as when portable terminal A and base station communicate, concerning the signal (desired signal) that the base station sends, another portable terminal B becomes interference to the signal (non-desired signal) that the base station sends for portable terminal A, and portable terminal A is produced obstacle with communicating by letter of base station.Similarly, the signal of portable terminal A transmission produces obstacle to communicating by letter of portable terminal B and base station.
The incoming level of the non-desired signal ripple that interference level and base station receive increases pro rata.Transmitting power when the incoming level of non-desired signal and portable terminal send non-desired signal is proportional.Therefore, for interference level is suppressed to Min., the base station just needs the transmitting power of control from portable terminal, makes the incoming level in the base station be always minimum necessary limit.When carrying out this control ideally, it is big that the number of channel that can communicate by letter becomes, and along with leaving this state, the number of channel that can communicate by letter reduces.
Transmitting power control technology about cdma mobile communication, the reflection power control method that for example has " IMT-2000 Study Committee; Air-interface WG; SWG Document Title:Volume 3Specification of Air-Interface for 3G Mobile System; Source:SWG; Version:0-4.0, Date:December 18,1997 " (below be called the W-CDMA mode) of radio industry association distribution to be put down in writing.Transmit power controlling method to the W-CDMA mode describes below.And so-called up direction represents that from portable terminal to base station transmit signals, down direction is represented to send signal from the base station to portable terminal in the explanation.
The signal of the up direction signal that sends from portable terminal is measured to noise power ratio (SIR) in the base station, sends the transmitting power control signal corresponding to the SIR that is measured.Figure 29 shows the structural map of prior art base station.The received signal that is received by antenna 210 is carried out the reception processing under mediation height/intermediate frequency of separating of baseband signal in receiving with wireless module 212 behind circulator 211.Because the signal from a plurality of portable terminals (being assumed to be MSa-MSn) in the received signal is re-used, so the synchronous seizure and the contrary extension process of received signal carried out in the base station in the contrary expanded circuit 213a-213n of the synchronous seizure of the parameter of setting each used for mobile terminal.Be transfused to respectively to detection section 214a-214n from the signal of the contrary expanded circuit 213a-213n output of synchronous seizure, carry out the detection of phase place rotation compensation and handle.Input to decoding part 215a-215n respectively from the signal of detection section 214a-214n output, implement to deinterleave and the wrong control and treatment of decoding etc. after, use as receiving data.
On the other hand, the signal from the contrary expanded circuit 213a-213n output of synchronous seizure inputs to up channel SIR determination part 221 by holding wire 220a-220n respectively.Up channel SIR determination part 221 is measured the SIR (being made as SIRa-SIRn) through the received signal of holding wire 220a-220n input respectively, and SIRa-SIRn is inputed to uplink channel transmission power control signal generating unit 222 through holding wire 230a-230n.
The target SIR (being made as T-SIRa-T-SIRn) that uplink channel transmission power control signal generating unit 222 compares SIRa-SIRn and MSa-MSn is scheduled to by control part 500 generates the transmitting power control signal (being made as TPCa-TPCn) to MSa-MSn.Wherein control part 500 is the constitutive requirements of carrying out the whole control in base station, and each constitutive requirements of base station are sent various signals, still, in order to simplify, has omitted the holding wire beyond the uplink channel transmission power control signal generating unit 222 in Figure 29.Figure 30 shows the structure of uplink channel transmission power control signal generating unit 222.Uplink channel transmission power control signal generating unit 222 is made of the transmitting power control signal generating unit 222a-222n of input SIRi and T-SIRi, output TPCi.Wherein Fu Jia alphabetical i represents the arbitrary letter among the a-n.Figure 31 shows the structure of transmitting power control signal generating unit 222i.Comparator 223i is relatively through the SIRi and the T-SIRi of holding wire 230i input, is created in when SIRi 〉=T-SIRi and selects 0 signal among the selector 224i, is created in when SIRi＜T-SIRi and selects 1 signal among the selector 224i.Selector 224i follows the output of comparator 223i and selects in 0 or 1 any, exports through holding wire 231i as TPCi.Wherein TPCi=0 is the signal that portable terminal indication transmitting power is reduced, and opposite TPCi=1 is the signal that portable terminal indication transmitting power is increased.
The frame generating unit 225a-225n of Figure 29 will give the transmission data of MSa-MSn and is configured to according to the frame by the form of system's regulation by the transmitting power control signal TPCa-TPCn of uplink channel transmission power control signal generating unit 222 inputs after the wrong control and treatment such as implement convolutional encoding among the encoding section 222a-222n and interweave.Expanded circuit 223a-223n handles with the spread spectrum of carrying out the output of frame generating unit corresponding to the parameter of MSa-MSn.In order will the signal multiplexing of MSa-MSn also to be sent, add circuit 226 sends the addition of signal., after sending, send from the transmission signal of add circuit 226 output from antenna 210 with wireless module 224 and circulator 211.
Mobile terminal MS i receives above-mentioned transmitting power control signal TPCi, according to demodulation result change transmitting power.Figure 32 shows the mobile terminal structure of prior art.Carried out the reception of separating under mediation height/intermediate frequency of baseband signal in receiving with wireless module 12 behind the circulator 11 handles by the received signal of antenna 10 receptions.
Because the signal of a plurality of channels is re-used in the received signal, in the contrary expanded circuit 13 of synchronous seizure of the parameter that the channel of portable terminal in the setting of this terminal is used used, carry out the synchronous seizure and the contrary extension process of frequency spectrum of received signal.Carry out detection such as phase place rotation compensation from the signals of contrary expanded circuit 13 outputs of synchronous seizure at detection section 14 and handle, in decoding part 15, implement to deinterleave and wrong control and treatment such as decoding after, use as receiving data.
The transmitting power control signal that is received is input to transmitting power control signal detection unit 40 by holding wire 16 after detection section 14 outputs.Transmitting power control signal detection unit 40 judges that the transmitting power control signal that is received still is " 1 " for " 0 ".When the result of determination of transmitting power control signal is " 0 ", transmitting power control signal detection unit 40 produces to be selected for example " 1dB " such control signal and gives selector 41 as selector 41 outputs, produce during for " 1 " to export as selector 41 in result of determination and for example select "+1dB " such control signal and give selector 41.
Selector 41 is according to the control signal from 40 inputs of transmitting power control signal detection unit, output for example one of "+1dB " or " 1dB " as the variable quantity of transmitting power.
Transmitting power calculating part 19 is according to from the variable quantity of the transmitting power of selector 41 inputs with from the transmitting power of this moments of transmitting power holding circuit 20 inputs, decision transmitting power after changing.That is, during from selector input "+1dB ", transmitting power after changing increases 1dB than the transmitting power of this moment, and during on the contrary from selector input " 1dB ", transmitting power after changing reduces 1dB than the transmitting power of this moment.
Send signal in encoding section 22 embodiment such as convolutional encoding and the wrong control and treatment that interweaves and wait, the frame in that frame generating unit 25 constitutes by system's prescribed form carries out the spread spectrum processing at expanded circuit 23.Variable gain amplifier 21 amplifies with suitable gain and sends signal so that send signal with the transmitting power of transmitting power calculating part 19 appointments., after sending, send from the transmission signal of variable gain amplifier 21 output from antenna 10 with wireless module 24 and circulator 11.
When portable terminal carried out above-mentioned action, an example of mobile terminal emitting power version was shown in the solid line 62 of Figure 33.Transverse axis 60 express times, the transmitting power of 61 expression portable terminals.But also provide the result of determination 83a～83e of the transmitting power control signal that is received in the moment 120～124 of transverse axis 60.As shown in figure 33, portable terminal action is as follows: for moment 122,124 of " 1 " transmitting power is increased 1dB in the control signal result of determination, for moment 120,121,123 of " 0 " transmitting power is reduced 1dB in the control signal result of determination.
As the problem that invention will solve, there are following 2 points.
As first problem, when the receiving quality difference of mobile terminal emitting power control signal, the transmitting power control signal that is received becomes the possibility that contains wrong demodulation result and becomes big.At this moment, prior art is such is judged to be demodulation result in one the method in " 0 " or " 1 ", and the possibility that mistake is judged to be the value different with the value of correct transmitting power control signal becomes big.
When the transmitting power control signal that wherein should be judged to be " 1 " is judged to be " 0 " mistakenly, reduce mistakenly when promptly portable terminal should increase transmitting power under the situation of transmitting power, the quality from the received signal of above-mentioned portable terminal in the base station reduces.As a result, the communication quality variation, even produce communication disruption.
On the contrary, when the transmitting power control signal that should be judged to be " 0 " is judged to be " 1 ", be the occasion that portable terminal increases transmitting power should reduce transmitting power the time mistakenly, the interference volume to other portable terminal that is caused by the signal of above-mentioned portable terminal in the base station increases.Therefore, produce other communications of Mobile Terminals quality variation, and communication disruption.The quantity that this means the portable terminal that can communicate by letter simultaneously reduces, the result, and the message capacity of entire system reduces.
And because the direct current offset that comprises in the receiver of portable terminal becomes to grade, during one of result of determination deflection " 0 " or " 1 " of the transmitting power control signal of receiving quality difference, above-mentioned communication quality reduces and the message capacity minimizing of system shows more obviously.
As second problem, communicate when interrupting, as the control sequence in the base station, receive the transmission of action ratio and move when stopping earlier, i.e. the contrary expanded circuit 213i of the synchronous seizure of Figure 29 (i=1 2 ... when action n) stops earlier than the action of up channel SIR determination part 221, because the output of the contrary expanded circuit 213i of the synchronous seizure after up channel SIR determination part 221 will stop according to action draws SIRi, therefore, this moves unstable.At this moment, produce inappropriate transmitting power control signal TPCi, send to mobile terminal MS i from the base station.Mobile terminal MS i may send with the transmitting power of surplus according to the result that above-mentioned inappropriate transmitting power control signal TPCi controls transmitting power.At this moment, the interference volume to other portable terminal that is caused by the signal of mobile terminal MS i in the base station increases.Therefore, produce other communications of Mobile Terminals quality and worsen, and communication disruption.The same with first problem, this also reduces the message capacity of entire system.
The present application that can solve first problem is constructed as follows: the wireless base station sends the transmitting power control signal that is used to control mobile terminal emitting power, the likelihood score that transmitting power control signal that the portable terminal basis receives and receiving quality calculate above-mentioned transmitting power control signal, according to the variable quantity of above-mentioned likelihood score calculating transmitting power, control the transmitting power of portable terminal according to above-mentioned variable quantity.
And, the present application that can solve first problem is characterised in that the signal-to-jamming ratio of the signal that adds also that in the calculating of above-mentioned likelihood score above-mentioned wireless base station sends, and, the signal-to-jamming ratio of the signal that more above-mentioned wireless base station sends and the receiving quality of transmitting power control signal, when the receiving quality that has only the channel that is just receiving worsens, be judged to be the channel that is just receiving and notify from a phone call interruption, when both worsen simultaneously, be judged to be situations such as entering the shelter because of terminal and can't be in suitable accepting state, calculate likelihood score according to these result of determination.
And, can solve the present application of first problem, when the likelihood score absolute value of above-mentioned transmitting power control signal is big, upgrade and keep the higher limit and the lower limit of mobile terminal emitting power, with the transmission power limit of above-mentioned portable terminal between above-mentioned higher limit and lower limit.
And, can solve the present application of first problem, calculate the transmitting power mean value of portable terminal, size according to above-mentioned likelihood score, switch the transmitting power of above-mentioned portable terminal, become the average transmit power of the portable terminal that aforementioned calculation goes out or the transmitting power of the portable terminal that calculates according to above-mentioned likelihood score.
And, can solve the present application of first problem, receiving quality or received power according to other channel different with the channel in the use are calculated open loop transmit power, size according to above-mentioned likelihood score, switch the transmitting power of above-mentioned portable terminal, become open loop transmit power that aforementioned calculation goes out or the transmitting power of the portable terminal that calculates according to above-mentioned likelihood score.
And, can solve the present application of first problem, above-mentioned transmitting power control signal is the signal that two values constitute, the calculating of above-mentioned likelihood score increases the absolute value of likelihood score when receiving quality is good, reduce the absolute value of likelihood score when the receiving quality difference.
And, can solve the present application of first problem, in above-mentioned likelihood score rising transmitting power during greater than first reference value, keep transmitting power during less than first reference value and greater than second fiducial value at above-mentioned likelihood score, reduce transmitting power during less than second fiducial value at above-mentioned likelihood score.
And, can solve the present application of first problem, in above-mentioned likelihood score rising transmitting power during greater than first reference value, control transmitting power during less than first reference value and greater than second fiducial value repeatedly at above-mentioned likelihood score, reduce transmitting power during less than second fiducial value at above-mentioned likelihood score.
And, can solve the present application of first problem, in above-mentioned likelihood score rising transmitting power during greater than first reference value, make the power of the variable quantity of transmitting power during less than first reference value and greater than second fiducial value at above-mentioned likelihood score, reduce transmitting power during less than second fiducial value at above-mentioned likelihood score corresponding to above-mentioned likelihood score.
And, can solve the portable terminal of the present application of first problem, comprising: the receiving system that receives the transmitting power control information that the wireless base station sends; Measure the determinator of the receiving quality of the electric wave that above-mentioned wireless base station sends; The likelihood score generation device, the receiving quality of being measured according to transmitting power control information that above-mentioned receiving system received and said determination device produces the likelihood score of above-mentioned transmitting power control information; The variable quantity generation device, the likelihood score that is produced according to above-mentioned likelihood score generation device produces the variable quantity of transmitting power; Control device, according to the variable quantity that above-mentioned variable quantity generation device is produced, the transmitting power of control portable terminal.
And, can solve the portable terminal of the present application of first problem, signalization interference ratio determinator also, measure the receiving quality of the interference signal of above-mentioned wireless base station transmission, above-mentioned likelihood score generation device considers that also the receiving quality that above-mentioned signal-to-jamming ratio determinator is measured produces likelihood score.
And, can solve the communication system of the present application of first problem, the wireless base station comprises: transmitting power control information generation device, the transmitting power control information that produces the transmitting power that is used to control portable terminal; Dispensing device sends the transmitting power control information that above-mentioned transmitting power control information generation device produces, and above-mentioned portable terminal comprises: receiving system receives the transmitting power control information that above-mentioned dispensing device sends; Measure the determinator of the receiving quality of the electric wave that above-mentioned wireless base station sends; The likelihood score generation device, the receiving quality of being measured according to transmitting power control information that above-mentioned receiving system received and said determination device produces the likelihood score of above-mentioned transmitting power control information; The variable quantity generation device, the likelihood score that is produced according to above-mentioned likelihood score generation device produces the variable quantity of transmitting power; Control device, according to the variable quantity that above-mentioned variable quantity generation device is produced, the transmitting power of control portable terminal.
And, can solve the present application of second problem, each SIR of above-mentioned each portable terminal is measured in the wireless base station, more above-mentioned each SIR that measures and predetermined target SIR, when above-mentioned portable terminal being received action and stops in above-mentioned SIR or above-mentioned wireless base station during greater than target SIR, the transmitting power control signal that making reduces transmitting power, at above-mentioned SIR during less than target SIR, the transmitting power control signal that making increases transmitting power sends to portable terminal with the transmitting power control signal of above-mentioned made.
And, can solve the present application of second problem, in the wireless base station of the transmitting power of control portable terminal, comprising: the signal quality determinator of measuring the signal quality of portable terminal; The signal quality that more above-mentioned signal quality determinator is measured and the comparison means of setting; Producing device, when above-mentioned signal quality is greater than the afore mentioned rules value in the comparative result of above-mentioned comparison means, the transmitting power control information that making reduces above-mentioned transmitting power is made the transmitting power control information that transmitting power is increased during less than the afore mentioned rules value in above-mentioned signal quality; Dispensing device, the transmitting power control information that above-mentioned producing device is made sends to above-mentioned portable terminal.And this signal quality is SIR and so on.
And, can solve the present application of second problem, in the wireless base station of the transmitting power of control portable terminal, comprising: receiving system receives the channel that above-mentioned portable terminal sends; Control the control device of the reception action of above-mentioned receiving system; Producing device, in case above-mentioned control device stops the reception action of above-mentioned receiving system, producing device is made command information, order reduces the transmitting power of above-mentioned portable terminal; Dispensing device, the command information that above-mentioned producing device is made sends to above-mentioned portable terminal.
And, can solve the present application of second problem, in the wireless base station of the transmitting power of control portable terminal, comprising: receiving system receives the channel that above-mentioned portable terminal sends; Control the control device of the reception action of above-mentioned receiving system; Producing device, when above-mentioned control device stopped the reception action of above-mentioned receiving system, producing device was made command information, and order reduces the transmitting power of above-mentioned portable terminal; Dispensing device, before above-mentioned reception action stopped, the command information that above-mentioned producing device is made sent to above-mentioned portable terminal.
Fig. 1 is the structural map of portable terminal of the present invention.
Fig. 2 is the structural map of transmitting power control signal likelihood score calculating part of the present invention.
Fig. 3 is the figure that shows likelihood score computational methods of the present invention.
Fig. 4 is the structural map of transmit power variation amount calculating part of the present invention.
Fig. 5 shows an example of likelihood score detection unit action of the present invention.
Fig. 6 shows the example that mobile terminal emitting power of the present invention changes.
Fig. 7 is the structural map of transmit power variation amount calculating part of the present invention.
Fig. 8 is the present invention action specification figure of portion repeatedly.
Fig. 9 is the action specification figure of likelihood score detection unit of the present invention.
Figure 10 shows the example that mobile terminal emitting power of the present invention changes.
Figure 11 is the structural map of transmit power variation amount calculating part of the present invention.
Figure 12 is the action specification figure of transmit power variation amount calculating part of the present invention.
Figure 13 shows the example that mobile terminal emitting power of the present invention changes.
Figure 14 is the structural map of portable terminal of the present invention.
Figure 15 is the structural map of transmit power variation amount calculating part of the present invention.
Figure 16 is the action specification figure of likelihood score detection unit of the present invention.
Figure 17 is the structural map of transmitting power control part of the present invention.
Figure 18 is the structural map of transmission power limit value calculating part of the present invention.
Figure 19 shows an example of transmit power variation of the present invention.
Figure 20 is the structural map of portable terminal of the present invention.
Figure 21 is the structural map of transmitting power selection portion of the present invention.
Figure 22 is the action specification figure of likelihood score detection unit of the present invention.
Figure 23 is the structural map of transmitting power selection portion of the present invention.
Figure 24 is the structural map of likelihood score selection portion of the present invention.
Figure 25 is the structural map of base station of the present invention.
Figure 26 is the structural map of uplink channel transmission power control signal generating unit of the present invention.
Figure 27 is the structural map of transmitting power control signal generating unit of the present invention.
Figure 28 is the action specification figure of selector 235i of the present invention.
Figure 29 is the structural map of prior art base station.
Figure 30 is the structural map of uplink channel transmission power control signal generating unit of the present invention.
Figure 31 is the structural map of prior art transmitting power control signal generating unit.
Figure 32 is the structural map of prior art portable terminal.
Figure 33 shows the form of prior art transmit power variation.
Figure 34 is to use the structural map of the receiving quality calculating part of signal-to-jamming ratio.
Figure 35 shows the communication system that the present application is suitable for.
Figure 35 shows the communication system of the present application.The communication system of the present application comprises base station 3500, portable terminal 3501-3503.Because portable terminal 3501 is positioned near the base station 3500, line status is also stable, so the mistake of power control bit is few, power control can be not out of control.But, though portable terminal 3502 also be positioned near the base station 3500, can there are barriers 3504 such as building therebetween.So, because this barrier 3504, from the big high attenuation of electric wave of base station 3500, so, the power control bit mistake, power control may be out of control.And portable terminal 3503 is owing to be positioned at apart from the base station 3500 places far away, because of radio wave attenuation and interference, and the power control bit mistake, power control may be out of control.But, even also not out of control, the more stable communication system of power control itself is provided in the present application under the environment that a kind of portable terminal is in the power control bit error-prone.
Fig. 1 shows the portable terminal structural map of first embodiment.To with the corresponding important document of prior art portable terminal constitutive requirements shown in Figure 32, give identical numbering.
By antenna 10, circulator 11, receive with wireless module 12, catch the received signal after handling respectively against expanded circuit 13 and detection section 14 synchronously, input to transmitting power control signal likelihood score calculating part 30 through holding wire 16.
Transmitting power control signal likelihood score calculating part calculates the likelihood score of transmitting power control signal according to the receiving quality of the transmitting power control signal that receives and the result of determination of " 0 " or " 1 ".The structure of transmitting power control signal likelihood score calculating part as shown in Figure 2.Transmitting power control signal 0/1 detection unit judges that the transmitting power control signal that is received still is " 1 " for " 0 ".
The receiving quality calculating part calculates the receiving quality of the transmitting power control signal that is received, and exports to likelihood score calculating part 51.As the receiving quality that the receiving quality calculating part calculates, should use the received power of instantaneous measurement and SIR etc. when the transmitting power control signal receives substantially.On the other hand, in order to observe received power and SIR exactly, need long integration operation.To requiring the transmitting power control of rapidity, when using above-mentioned received power of asking integration when long or SIR (calling the long-time integration value in the following text), it is big that control lag becomes, and becomes and can not suitably control transmitting power.Therefore, the receiving quality calculating part calculates the receiving quality of transmitting power control signal according to above-mentioned transmitting power control signal with at the received power and the SIR integral result (calling the short time integrated value in the following text) of the signal that the moment received close with the above-mentioned transmitting power control signal time.
And, owing to consider that short time integrated value error is bigger, when so using the short time integrated value to calculate receiving quality, there is the possibility of erroneous calculations receiving quality.For example, also can be like this: long time integral value of receiving quality calculating part and short time integrated value, the action of when both difference is big, exporting the receiving quality difference.
And, because notifying from a phone call, the channel that is just receiving interrupts, infer that perhaps judgement can't be in suitable accepting state because of entering situations such as shelter, and the receiving quality calculating part also can carry out following action.Portable terminal is measured in the W-CDMA mode for example as interference channel and to be sent all the time by the base station and its transmitting power is the received power or the SIR (calling signal-to-jamming ratio in the following text) of known channel.The receiving quality calculating part structure of this moment as shown in figure 34.Signal-to-jamming ratio determination part 300 is measured above-mentioned signal-to-jamming ratio.Comparing section 301 more above-mentioned short time integrated values and the signal-to-jamming ratio that obtains from signal-to-jamming ratio determination part 300.Receiving quality determination section 302 is according to the comparative result in the comparing section 301, when the receiving quality that has only the channel that is just receiving worsens, be judged to be the channel that is just receiving and notify from a phone call interruption, or when both worsen simultaneously, be judged to be situations such as entering the shelter because of terminal and can't be in suitable accepting state, the receiving quality of output difference.
Likelihood score calculating part 51 calculates the likelihood score of above-mentioned transmitting power control signal based on the result of determination of transmitting power control signal 0/1 detection unit 40 and the result of calculation of receiving quality calculating part 50.The result of determination of transmitting power control signal 0/1 detection unit 40 and one of the result of calculation of receiving quality calculating part 50 and relation of likelihood score are for example shown in the broken line 150 of Fig. 3.The following describes the likelihood score result of calculation under Fig. 3 situation.The result of determination of transmitting power control signal is 1 o'clock, likelihood score get on the occasion of.On the contrary, result of determination is 0 o'clock, and likelihood score is got negative value.And receiving quality is when good, and the absolute value of likelihood score enlarges, and on the contrary, the absolute value of likelihood score reduces during the receiving quality difference.
Input to the transmit power variation amount calculating part 31 of Fig. 1 with the transmitting power control signal likelihood score of said method calculating.Transmit power variation amount calculating part 31 calculates the variable quantity of transmitting power based on the transmitting power control signal likelihood score of being imported.The structure of the transmit power variation amount calculating part 31 of first embodiment as shown in Figure 4.Likelihood score detection unit 70 is based on the likelihood score from the transmitting power control signal of transmitting power control signal likelihood score calculating part 30 input, generation is used for selecting exporting to selector 71 as the transmit power variation amount control signal of one of "+1dB (increase) ", " 1dB (minimizing) ", " 0dB (constant) " for example.An example of likelihood score detection unit 70 actions as shown in Figure 5 among first embodiment.The likelihood score of the transmitting power control signal of being imported is when the zone 100 of α+above, and likelihood score detection unit 70 will select the control signal of "+1dB " to export to selector 71 in selector 71.Equally, the likelihood score of the transmitting power control signal of being imported greater than α-less than α+zone 101 time, likelihood score detection unit 70 will select the control signal of " 0dB " to export to selector 71, the likelihood score of the transmitting power control signal of being imported less than α-zone 102 time, likelihood score detection unit 70 will select the control signal of " 1dB " to export to selector 71.Selector 71 is exported to the transmitting power calculating part 19 of Fig. 1 according to selecting the emissivity variable quantity from the control signal of likelihood score detection unit 70.
The transmitting power calculating part 19 of Fig. 1 calculates transmitting power according to the transmit power variation amount of being imported from transmit power variation amount calculating part 31 with from the transmitting power of this moment that transmitting power holding circuit 20 is imported with the prior art portable terminal the samely.Transmission signal after encoding section 22 and expanded circuit 23 implemented to handle is in order to send with above-mentioned transmitting power and after variable gain amplifier 21 amplifies, through sending with wireless module 24 and circulator 11 back by antenna 10 transmissions.
The solid line 63 of Fig. 6 shows that portable terminals carry out an example of mobile terminal emitting power version after the action of first embodiment.As shown in Figure 6, the likelihood score of transmitting power control signal greater than α-less than α+time 103 during, portable terminal is that 0dB is that transmitting power does not change like that and moves by the variable quantity that makes transmitting power.
The following describes the action of the second embodiment portable terminal.The structure of the second embodiment portable terminal is identical with first embodiment.The structure of transmit power variation amount calculating part 31 is different with first embodiment among second embodiment.The structure of the second embodiment transmit power variation amount calculating part 31 as shown in Figure 7.Give same numbering for constitutive requirements with the first embodiment transmit power variation amount calculating part, 31 correspondences.
Likelihood score detection unit 70 is according to the likelihood score of the transmitting power control signal of being imported from transmitting power control signal likelihood score calculating part 30, produce the control signal of selecting as the transmit power variation amount, export to selector 71 as one of "+1dB (increase) ", " 1dB (minimizing) ", " portion 72 (perseveration) repeatedly ".The action of portion 72 as shown in Figure 8 repeatedly.
Output " 1dB " when portion 72 is set at and is "+1dB " in input repeatedly, output "+1dB " when input is " 1dB ".Fig. 9 shows an example of the action of the likelihood score detection unit 70 among second embodiment.The likelihood score of the transmitting power control signal of being imported is when the zone 100 of α+above, and likelihood score detection unit 70 will select the control signal of "+1dB " to export to selector 71 in selector 71.Equally, the likelihood score of the transmitting power control signal of being imported greater than α-less than α+zone 101 time, likelihood score detection unit 70 will select the control signal of " portion 72 repeatedly " to export to selector 71, the likelihood score of the transmitting power control signal of being imported less than α-zone 102 time, likelihood score detection unit 70 will select the control signal of " 1dB " to export to selector 71.
Selector 71 is exported to the transmitting power calculating part 19 of Fig. 1 according to selecting the transmit power variation amount from the control signal of likelihood score detection unit 70.The back is the same with first embodiment, sends from antenna 10 until sending signal.
The solid line 64 of Figure 10 shows that portable terminals carry out second embodiment and move an example of back mobile terminal emitting power version.As shown in figure 10, the likelihood score of transmitting power control signal greater than α-less than α+time 103 during, the portable terminal action strikes a bargain for repeating "+1dB " and " 1dB " variable quantity as transmitting power.
The following describes the action of the portable terminal of the 3rd embodiment.The structure of the 3rd embodiment portable terminal is the same with second embodiment with first embodiment as shown in Figure 1.The structure of transmit power variation amount calculating part 31 is different with second embodiment with first embodiment among the 3rd embodiment.The structure of the transmit power variation amount calculating part 31 of the 3rd embodiment as shown in figure 11.The likelihood score of the moving rate control signal of emission that likelihood score-transmit power variation change of variable portion 73 will be imported from transmitting power control signal likelihood score calculating part 30 is transformed to the transmit power variation amount.The broken line 74 of Figure 12 shows an example of the action of likelihood score-transmit power variation change of variable portion 73.Among Figure 12, the likelihood score of the transmitting power control signal of being imported is greater than α+time, and likelihood score-transmit power variation change of variable portion 73 exports as "+1dB " as the transmit power variation amount to transmitting power calculating part 19.Equally, the likelihood score of the transmitting power control signal of being imported is less than α-time, and likelihood score-transmit power variation change of variable portion 73 exports as " 1dB " as the transmit power variation amount to transmitting power calculating part 19.At this moment, the likelihood score of the transmitting power control signal of being imported is greater than α-less than α+time, likelihood score-transmit power variation change of variable portion 73 likelihood scores corresponding to the transmitting power control signal for example resembles the transmit power variation amount that changes the broken line 74 of Figure 12 to transmitting power calculating part 19 output.The back is the same with first embodiment, sends from antenna 10 until sending signal.
The solid line 65 of Figure 13 shows that portable terminals carry out the 3rd embodiment and move an example of back mobile terminal emitting power version.As shown in figure 13, the likelihood score of transmitting power control signal greater than α-less than α+time 103 during, portable terminal control transmitting power makes the variable quantity of transmitting power become the also little value than "+1dB " and " 1dB ".
Figure 14 shows the structure of the portable terminal of the 4th embodiment.For giving identical numbering with the constitutive requirements of the structure correspondence of Figure 32 and portable terminal shown in Figure 1.The same with first embodiment, the likelihood score of the transmitting power control signal of calculating at transmitting power control signal likelihood score calculating part 30 is transfused to transmit power variation amount calculating part 31.
Figure 15 shows the structure of the transmit power variation amount calculating part 31 of the 4th embodiment.Likelihood score detection unit 130 is according to the likelihood score of the transmitting power control signal of being imported from transmitting power control signal likelihood score calculating part 30, produce the control signal of selecting as the transmit power variation amount, export to selector 131 as one of "+1dB (increase) " or " 1dB (minimizing) ".Figure 16 shows an example of the action of the likelihood score detection unit 130 among the 4th embodiment.The likelihood score of the transmitting power control signal of being imported for 0 regional the time, likelihood score detection unit 130 will select the control signal of "+1dB " to export to selector 131 in selector 131.On the contrary, the likelihood score of the transmitting power control signal of being imported less than 0 regional the time, likelihood score detection unit 130 will select the control signal of " 1dB " to export to selector 131.Selector 131 is exported to the transmitting power calculating part 19 of Figure 14 according to selecting the transmit power variation amount from the control signal of likelihood score detection unit 130.The same transmitting power of calculating portable terminal of transmitting power calculating part 19 with first embodiment.
Transmission power limit portion 32 relatively by the transmitting power of transmitting power calculating part 19 calculating and the transmission power limit value of calculating in transmission power limit portion 32 inside, carries out the restriction of mobile terminal emitting power.Figure 17 shows the structure of transmission power limit portion 32.The transmitting power of being imported by transmitting power calculating part 19 inputs to transmission power limit value calculating part 90 and comparing section 91.Figure 18 shows an example of the action of transmission power limit value calculating part 90.In the transmission power limit value calculating part 90, at first relatively the likelihood score of the transmitting power control signal of being imported from transmitting power control signal likelihood score calculating part 30 and threshold value beta+with β-.Wherein the likelihood score of transmitting power control signal β-≤(likelihood score)＜β+relation when being false, when promptly the likelihood score absolute value of transmitting power control signal is big, upgrade the value of upper limit of emission power value TXPU and transmitting power lower limit value TXPL.By this action, when the likelihood score absolute value of transmitting power control signal is big, be that the receiving quality of transmitting power control signal is when good, calculate the upper limit of emission power value and the lower limit of portable terminal, on the contrary, at the likelihood score absolute value of transmitting power control signal hour, promptly during the receiving quality difference of transmitting power control signal, keep the upper limit of emission power value and the lower limit of portable terminal.
The comparing section 91 of Figure 17 is carried out the transmitting power and the higher limit of the transmitting power of being imported from transmission power limit value calculating part 90 and the comparison of lower limit from 19 inputs of transmitting power calculating part.Wherein, from the transmitting power of transmitting power calculating part 19 input when bigger than the higher limit TXPU of the transmitting power of being imported from transmission power limit value calculating part 90, comparing section 91 changes to transmitting power transmitting power holding circuit 20 and the variable gain amplifier 21 of exporting to Figure 14 behind the TXPU.On the contrary, from than the transmitting power of being imported from transmission power limit value calculating part 90 lower limit TXPL hour of the transmitting power of transmitting power calculating part 19 input, comparing section 91 changes to transmitting power transmitting power holding circuit 20 and the variable gain amplifier 21 of exporting to Figure 14 behind the TXPL.And the transmitting power of being imported from transmitting power calculating part 19 will be exported to transmitting power holding circuit 20 and the variable gain amplifier 21 of Figure 14 from the transmitting power former state of transmitting power calculating part 19 inputs between TXPU and TXPL the time.The back is moved all identical with first embodiment when antenna 10 sends until sending signal.
The solid line 66 of Figure 19 shows that portable terminals carry out the 4th embodiment and move an example of back mobile terminal emitting power version.As shown in figure 19, the likelihood score of transmitting power control signal greater than α-less than α+time 103 during, the higher limit TXPU of portable terminal control transmitting power and the value of lower limit TXPL keep constant.And in the example of Figure 19, during the time 103, the transmitting power of portable terminal is constrained to the lower limit TXPL that does not reduce transmitting power.
In addition, in the 4th embodiment, transmit power variation amount calculating part 31 also can be the structure shown in first-Di, three embodiment.
Figure 20 shows the structure of the portable terminal of the 5th embodiment.For giving identical numbering with the constitutive requirements of the structure correspondence of Figure 32 and portable terminal shown in Figure 1.The same with first embodiment, the likelihood score of the transmitting power control signal of calculating at transmitting power control signal likelihood score calculating part 30 is transfused to transmit power variation amount calculating part 31.Transmit power variation amount calculating part 31 also can be the arbitrary structure and the action of the transmit power variation amount calculating part 31 that illustrates in first-Di, four embodiment.The variable quantity of the transmitting power of being calculated by transmit power variation amount calculating part 31 inputs to transmitting power calculating part 19.
The same transmitting power of calculating portable terminal of transmitting power calculating part 19 with first embodiment.
The transmitting power of being calculated by transmitting power calculating part 19 inputs to transmitting power selection portion 33.Transmitting power selection portion 33 is carried out the selection of transmitting power according to the likelihood score of the transmitting power control signal of importing from transmitting power control signal likelihood score calculating part 30.
Figure 21 shows the structure of the transmitting power selection portion 33 among the 5th embodiment.Likelihood score detection unit 140 is according to the likelihood score of the transmitting power control signal of being imported from transmitting power control signal likelihood score calculating part 30, produce to select the control signal of one of transmitting power of being imported from the transmitting power of transmitting power calculating part 19 inputs or from transmitting power equalization portion 142, export to selector 141 as transmitting power.Figure 22 shows an example of the action of the likelihood score detection unit 140 among the 5th embodiment.The likelihood score of the transmitting power control signal of being imported greater than γ+zone 104 or less than γ-zone 106 time, when the receiving quality of the transmitting power control signal that is promptly received was good, likelihood score detection unit 140 was selected in selector 141 from the control signal of the moving rate of emission of transmitting power calculating part 19 inputs to selector 141 outputs.On the contrary, the likelihood score of the transmitting power control signal of being imported greater than γ-less than γ+zone 105 time, during the receiving quality difference of the transmitting power control signal that is promptly received, likelihood score detection unit 140 is selected from the control signal of the transmitting power of transmitting power equalization portion 142 inputs to selector 141 outputs.Selector 141 is exported to transmitting power holding circuit 20 and the variable gain amplifier 21 of Figure 20 according to selecting transmitting power from the control signal of likelihood score detection unit 140.Wherein, the mean value of the transmitting power of being imported calculates in transmitting power equalization portion 142, exports to selector 141.
The action of back when sending signal from antenna 10 transmissions is all identical with first embodiment.
The following describes the action of the portable terminal of the 6th embodiment.The structure of the 6th embodiment portable terminal is identical with the 5th embodiment, as shown in figure 20.The structure of transmitting power selection portion 33 is different with the 5th embodiment among the 6th embodiment.Figure 23 shows the structure of the transmitting power selection portion 33 of the 6th embodiment.Likelihood score detection unit 150 is according to the likelihood score of the transmitting power control signal of importing from transmitting power control signal likelihood score calculating part 30, produce to select the control signal of one of transmitting power of being imported from the transmitting power of transmitting power calculating part 19 inputs or from open loop transmit power calculating part 152, export to selector 151 as transmitting power.Figure 24 shows an example of the action of the likelihood score detection unit 150 among the 6th embodiment.The likelihood score of the transmitting power control signal of being imported greater than δ+zone 107 or less than δ-zone 109 time, when the receiving quality of the moving rate control signal of the i.e. emission that is received was good, likelihood score detection unit 150 was selected in selector 151 from the control signal of the transmitting power of transmitting power calculating part 19 inputs to selector 151 outputs.
On the contrary, the likelihood score of the transmitting power control signal of being imported greater than δ-less than δ+zone 108 time, during the receiving quality difference of the transmitting power control signal that is promptly received, likelihood score detection unit 150 is selected from the control signal of the transmitting power of open loop transmit power calculating part 152 inputs to selector 151 outputs.Selector 151 is exported to transmitting power holding circuit 20 and the variable gain amplifier 21 of Figure 20 according to selecting transmitting power from the control signal of likelihood score detection unit 150.
Open loop transmit power calculating part 152 is by using the channel different with the channel in the communication the use for example receiving quality of the interference channel etc. of W-CDMA mode and received power etc., attenuation between estimation portable terminal and the base station calculates the mobile terminal emitting power that satisfies desired receiving quality in the base station.Open loop transmit power calculating part 152 is exported to selector 151 with the transmitting power of being calculated.
The action of back when sending signal from antenna 10 transmissions is all identical with first embodiment.
Figure 25 shows the architecture of base station of the 7th embodiment.Give same numbering for the constitutive requirements corresponding with prior art architecture of base station shown in Figure 29.The signal that is received the same with the prior art base station in up channel SIR determination part 221 each SIR (SIRa-SIRn) of determined each portable terminal (MSa-MSn), behind holding wire 230a-230n, input to uplink channel transmission power control signal generating unit 250.
Uplink channel transmission power control signal generating unit 250 is according to SIRa-SIRn with to the comparative result of MSa-MSn by the predetermined target SIR (being made as T-SIRa-T-SIRn) of control part 501, and expression to the signal that is just sending by MSa-MSn whether carry out the control signal that receives action, from the Rxa-RXn of control part 501 inputs, generate transmitting power control signal (being made as TPCa-TPCn) to MSa-MSn.And, control part 501 with prior art base stations control portion shown in Figure 29 500 same function on have additional function from Rxa-RXn to uplink channel transmission power control signal generating unit 250 that supply with.Wherein, MSi (i=a ... when n) carrying out proper communication with the base station, RXi (i=a ... n) become the signal of expression, the signal of the content that the reception action is just being carried out to just sending by MSi.On the contrary, because of conceal into shelter etc. influence MSi and proper communication can not be kept in the base station, when the base station was interrupted receiving from the signal of MSi, RXi made the content that receives action is not carried out in expression to the signal that is just being sent by MSi signal.
Figure 26 shows the structure of uplink channel transmission power control signal generating unit 250.Uplink channel transmission power control signal generating unit 250 is by input SIRi, T-SIRi and RXi, and the transmitting power control signal generating unit 250a-250n of output TPCi constitutes.Wherein Fu Jia alphabetical i represents the arbitrary letter among the a-n.Figure 27 shows the structure of transmitting power control signal generating unit 250i.SIRi and T-SIRi that comparator 254i relatively imports through holding wire 230i, when SIRi 〉=T-SIRi, be created in the signal of selecting 0 (signal that the indication transmitting power reduces) among the selector 251i, when SIRi＜T-SIRi, be created in the signal of selecting 1 (signal that the indication transmitting power increases) among the selector 251i.Selector 251i follows the output of comparator 254i and selects in 0 or 1 one, through holding wire 252i outlet selector 253i.Whether selector 253i is just carrying out the signal RXi that receives action according to control, decision transmitting power control signal TPCi.Figure 28 shows the action of selector 253i.When RXi represented to be in the reception action, the signal that selector 253i selects to import through holding wire 252i was as transmitting power control signal TPCi.On the contrary, represent to be in to receive at RXi and stop when middle, selector 253i selects 0 (signal that the indication transmitting power reduces) as transmitting power control signal TPCi.
The transmitting power control signal TPCa-TPCn to MSa-MSn that is made by said method inputs to frame generating unit 225a-225n through holding wire 231a-231n, implement processing same as the prior art after, send from antenna 210.
According to the present invention, even receiving to contain, portable terminal of the present invention receives wrong transmitting power control signal, can not cause the mistake control of transmitting power control yet.That is, owing to can prevent by the transmission under mistake control and the superfluous transmitting power that causes out of control, so, compared with prior art, can make receptive participant's quantity increase in the system.And, owing under superfluous transmitting power, do not send, so, the power supply of portable terminal also saved.
And wireless base station of the present invention owing to after stopping the reception action of signal that portable terminal is sent, do not carry out the transmission of unsuitable transmitting power control signal, thus, can prevent that portable terminal from carrying out the transmission under the superfluous transmitting power.Therefore, the deterioration of the communication quality that causes can be avoided controlling, simultaneously, participant's capacity of entire system can be improved significantly by the mistake of power control.

Claims (16)

1. a wireless base station is connected the transmit power controlling method of communication system with the code division multiple access that portable terminal constitutes, it is characterized in that, described wireless base station sends the transmitting power control signal that is used to control mobile terminal emitting power, described portable terminal produces the likelihood score of above-mentioned transmitting power control signal according to the receiving quality of transmitting power control signal that receives and transmitting power control signal, according to the variable quantity of above-mentioned likelihood score generation transmitting power, control the transmitting power of portable terminal according to above-mentioned variable quantity.
2. code division multiple access as claimed in claim 1 connects the transmit power controlling method of communication system, it is characterized in that the generation of above-mentioned likelihood score is also considered the signal-to-jamming ratio of the signal that above-mentioned wireless base station sends and carried out.
3. code division multiple access as claimed in claim 1 connects the transmit power controlling method of communication system, it is characterized in that, the receiving quality of the receiving quality of the interference signal that more above-mentioned wireless base station sent and transmitting power control signal, when having only side's receiving quality to worsen, be judged to be to notify from a phone call and interrupt, when two sides' receiving quality worsens, be judged to be and be in suitable accepting state, produce likelihood score according to these result of determination.
4. code division multiple access as claimed in claim 1 connects the transmit power controlling method of communication system, it is characterized in that, when the likelihood score absolute value of above-mentioned transmitting power control signal is big, upgrade and keep the higher limit and the lower limit of mobile terminal emitting power, with the transmission power limit of above-mentioned portable terminal between above-mentioned higher limit and lower limit.
5. code division multiple access as claimed in claim 1 connects the transmit power controlling method of communication system, it is characterized in that, produce the mean value of the transmitting power of portable terminal, size according to above-mentioned likelihood score, switch the transmitting power of above-mentioned portable terminal, become one of the average transmit power of portable terminal of above-mentioned generation or transmitting power of the portable terminal that produces according to above-mentioned likelihood score.
6. code division multiple access as claimed in claim 1 connects the transmit power controlling method of communication system, it is characterized in that, receiving quality or received power according to other channel different with the channel in the use produce open loop transmit power, size according to above-mentioned likelihood score, switch the transmitting power of above-mentioned portable terminal, become the open loop transmit power of above-mentioned generation or the transmitting power of the portable terminal that produces according to above-mentioned likelihood score.
7. code division multiple access as claimed in claim 1 connects the transmit power controlling method of communication system, it is characterized in that, above-mentioned transmitting power control signal is the signal that two values constitute, the calculating of above-mentioned likelihood score increases the absolute value of likelihood score when receiving quality is good, reduce the absolute value of likelihood score when the receiving quality difference.
8. code division multiple access as claimed in claim 7 connects the transmit power controlling method of communication system, it is characterized in that, in above-mentioned likelihood score rising transmitting power during greater than first reference value, keep transmitting power during less than first reference value and greater than second fiducial value at above-mentioned likelihood score, reduce transmitting power during less than second fiducial value at above-mentioned likelihood score.
9. code division multiple access as claimed in claim 7 connects the transmit power controlling method of communication system, it is characterized in that, in above-mentioned likelihood score rising transmitting power during greater than first reference value, control transmitting power during less than first reference value and greater than second fiducial value repeatedly at above-mentioned likelihood score, reduce transmitting power during less than second fiducial value at above-mentioned likelihood score.
10. code division multiple access as claimed in claim 7 connects the transmit power controlling method of communication system, it is characterized in that, in above-mentioned likelihood score rising transmitting power during greater than first reference value, make the power of the variable quantity of transmitting power during less than first reference value and greater than second fiducial value at above-mentioned likelihood score, reduce transmitting power during less than second fiducial value at above-mentioned likelihood score corresponding to above-mentioned likelihood score.
11. a wireless base station is connected the transmit power controlling method of communication system with the code division multiple access that portable terminal constitutes, it is characterized in that, each SIR of above-mentioned each portable terminal is measured in above-mentioned wireless base station, more above-mentioned each SIR that measures and predetermined target SIR, when above-mentioned portable terminal being received action and stops in above-mentioned SIR or above-mentioned wireless base station during greater than target SIR, the transmitting power control signal that making reduces transmitting power, at above-mentioned SIR during less than target SIR, the transmitting power control signal that making increases transmitting power sends to portable terminal with the transmitting power control signal of above-mentioned made.
12. a portable terminal is characterized in that, comprising: the receiving system that receives the transmitting power control information of wireless base station transmission; Measure the determinator of the receiving quality of the electric wave that above-mentioned wireless base station sends; The likelihood score generation device, the receiving quality that transmitting power control information that receives according to above-mentioned receiving system and said determination device are measured produces the likelihood score of above-mentioned transmitting power control information; The variable quantity generation device, the likelihood score that is produced according to above-mentioned likelihood score generation device produces the variable quantity of transmitting power; Control device, according to the variable quantity that above-mentioned variable quantity generation device is produced, the transmitting power of control portable terminal.
13. portable terminal as claimed in claim 12, it is characterized in that, signalization interference ratio determinator also, measure the receiving quality of the interference signal of above-mentioned wireless base station transmission, above-mentioned likelihood score generation device considers that also the receiving quality that above-mentioned signal-to-jamming ratio determinator is measured produces likelihood score.
14. a wireless base station is connected communication system with the code division multiple access that portable terminal constitutes, it is characterized in that,
Above-mentioned wireless base station comprises: transmitting power control information generation device, the transmitting power control information that produces the transmitting power be used to control portable terminal; Dispensing device sends the transmitting power control information that above-mentioned transmitting power control information generation device produces,
Above-mentioned portable terminal comprises: receiving system receives the transmitting power control information that above-mentioned dispensing device sends; Measure the determinator of the receiving quality of the electric wave that above-mentioned wireless base station sends; The likelihood score generation device, the receiving quality of being measured according to transmitting power control information that above-mentioned receiving system received and said determination device produces the likelihood score of above-mentioned transmitting power control information; The variable quantity generation device, the likelihood score that is produced according to above-mentioned likelihood score generation device produces the variable quantity of transmitting power; Control device, according to the variable quantity that above-mentioned variable quantity generation device is produced, the transmitting power of control portable terminal.
15. a wireless base station, the transmitting power of control portable terminal is characterized in that, comprising:
Receiving system receives the channel that above-mentioned portable terminal sends;
Control the control device of the reception action of above-mentioned receiving system;
Producing device, in case above-mentioned control device stops the reception action of above-mentioned receiving system, producing device is made command information, order reduces the transmitting power of above-mentioned portable terminal;
Dispensing device, the command information that above-mentioned producing device is made sends to above-mentioned portable terminal.
16. a wireless base station, the transmitting power of control portable terminal is characterized in that, comprising:
Receiving system receives the channel that above-mentioned portable terminal sends;
Control the control device of the reception action of above-mentioned receiving system;
Producing device, when above-mentioned control device stopped the reception action of above-mentioned receiving system, producing device was made command information, and order reduces the transmitting power of above-mentioned portable terminal;
Dispensing device, before above-mentioned reception action stopped, the command information that above-mentioned producing device is made sent to above-mentioned portable terminal.
CNB998102431A 1998-12-21 1999-12-21 Method for controlling transmission power for communication system Expired - Fee Related CN1214546C (en)

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EP1156602A4 (en) 2004-03-03
EP1156602B1 (en) 2007-09-05
DE69937069T2 (en) 2008-05-29
EP1821431A1 (en) 2007-08-22
US20040266473A1 (en) 2004-12-30
AU1690800A (en) 2000-07-12
WO2000038355A1 (en) 2000-06-29
DE69937069D1 (en) 2007-10-18
EP1821431B1 (en) 2010-02-24
US6907260B1 (en) 2005-06-14
EP1156602A1 (en) 2001-11-21
CN1323470A (en) 2001-11-21

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